"The course is breaking up at the bottom," Vonn said, holding ice on her finger. "I got a little bit too inside and lost my outside ski. My knee came up and hit my chin."

After being checked course-side for a few minutes, Vonn got up and skied down to the finish.

Vonn said she was going for an X-ray on her right hand, after which she'll know if she will race Friday's slalom, her final event of the games.

"I was like a pretzel -- so tangled up," Vonn said.

Vonn was just getting over a bruised right shin, having opened her Olympics with gold in downhill and bronze in super-G.

While giant slalom is usually Vonn's worst event, she had posted the fastest split times until her crash.

"I was hoping for something today," Vonn said. "I was charging, I was skiing hard. I'm disappointed in myself now that I made that mistake. I can only keep smiling. I know I was skiing well."

Vonn had a difficult starting position, 17th, but was 0.35 second ahead of the pace by first-run leader Elisabeth Goergl of Austria at the third split, just before the crash.

"She was in contention to win. To put four-tenths on this field from No. 17 is incredible," said Thomas Vonn, the skier's husband, unofficial coach and chief adviser. "You can win 99 percent of the way and not have anything."

Vonn's best career giant slalom finish was fourth in Aspen, Colo., near her home in Vail, last season.

This season, Vonn has had trouble with the conditions on GS courses injected with water to create icier surfaces, and she blamed inconsistent conditions when she hurt her wrist in a fall during a GS in Lienz, Austria, at the end of December.

Conditions were tough this time due to heavy fog and consistent snowfall during the race.

Vonn's teammate Julia Mancuso was the next skier down the mountain and had to pull up midway through her run because Vonn was still on the side of the course.

Mancuso, the defending champion, then had to make her way back up to the top of the course for a later start. She ultimately finished 18th and appeared disturbed, since starting later usually is tougher with the course deteriorating as one skier after another comes down.

Restarting is also a test physically and mentally.

"Well now its time to use that anger and fight scond run!!" Mancuso wrote on her Twitter account between runs.

"She's mad, she's frustrated, she's probably mad at me," Vonn said of her teammate. "I feel terrible, and I hope she understands. I definitely didn't want that to happen."